Crawford's book was first published in 07 and the study he sites is 04.

The mistake you are making with low TMRCA is thinking that larger datasets would yield more accurate data when it is pretty evident now that these bikini haplotypes used by geneticists in deep ancestry studies were used to help negate the effect of drift.

> Crawford states this was unexpected and the news made headlines
> about 10 years ago

Maybe it was unexpected based on what was known 10 years ago. We
know more now, and today we know that there is no reason to be
surprised that mtDNA and NRY have different TMRCA estimates.

> How would you explain differently, genetic adam being about half the
> age of genetic eve when Geneticists say it is drift or sex specific
> demographic processes?

You are giving the explanation already: lower effective population
size. The mistake you made was taking this reasonable reality and
trying to pin on it some phantom "bias" that serves to "confound
variance".

VV

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